Steam-boiler furnace.



PATENTED MAR. 3, 190's.

I. 'v. KENNY STEAM BOILER FURNACE.

APPLICATION FILED MAB. 6, 1907.

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JAMES VINCENT KENNY, OF OMAHA, NEBRASKA.

STEAM-BOILER FURNACE.

Specification of Letters Patent.

Patented March 3, 1908.

Application filed March a. 1907. smai No. 360.918.

To all whom it may concern:

Be it known that I, JAMES VINCENT KENNY, a-resident of Omaha, in the county of Douglas and State of Nebraska, have invented certain new and useful Im rovements '1n Steam-Boiler Furnaces; and

do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to steam boiler furnaces and more particularly to improvements upon that for which Letters-Patent were issued to me February 15th, 1898, and designated by No. 598,997,one object of the present invention being to so construct the furnace as to facilitate the removal and replacement of the boiler tubes.

A further object is to provide a structure in which a deflector in the space inclosed by the boiler tubes, can be readily adjusted vertically while the furnace is in full operation.

' A further object is to so construct thefurnace that the products of combustion will be utilized to assist in superheating thesteam in the dome.

With these objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts as hereinafter set forth and pointed out in the claims.

In the accompanying drawing; Figure 1 is a vertical section of a steam boiler furnace embodying my improvements and Fig. 2 is a detail view.

In constructing the furnace, I employ an outer shell 1, within the lower portion of which and removed a short distance therefrom, a comparatively short shell 2 is located and constitutes the wall of a dome-shaped combustion chamber 3, said shells 1 and 2 being connected by means of bolts 4 and the space 5 between them constituting a water compartment or jacket. The dome of the combustion chamber is connected by a short flue 7, with a flue plate 8 soas to communicate with an opening 9 inthe latter. A flue plate 10 is disposed a considerable distance above the flue plate 8 and provided with a central opening 11 surrounded by an upwardly projecting flange 12. To this flange, the lower end of a pipe 13 is secured, said pipe extending upwardly through the steam dome 14 above the upper flue plate 10 and terminating at an opening 15 in the center of the upper head 16 of the boiler- In eflecting the connection of the pipe 13 to the boiler head 16, the latter is provided, around the opening 15 with a depending flange 17, and between the latter and the pipe 13, a-ring 18 is located. Rivets 19 pass through the wall of the pipe, the ring 18 and the flange 17. A seat 20 is thus formed for a cover plate 21 located within the opening 15 in the upper head of the boiler.

The flue plates 8 and 10 are provided with a number of holes for the respective ends of a series of boiles tubes 22. These tubes are arranged in annular formation so as to form a central vertical flue 23 communicating at its lower end with the short flue 7 on the combustion chamber, and communicating at its upper end with the pipe 13. A shell 24 incloses the annular series of tubes 22 and is secured at its respective ends to the flue plates 8 and 10. The shell 24 is spaced from the outer shell 1 and secured to the latter by rivets 25.

The furnace is'inclosed by a smoke-jacket 'or drum 26 extending from the upper end of the steam dome to a line below t e plane of the upper end of the combustion chamber. The shells 1 and 24 are made with alined openings at or near the u per end of the water jacket formed by these shells, and rings 27 are secured between said shells 1 and 24. so as to communicate with the alined openings therein for the purpose of conducting the smoke and gases to the jacket or drum 26. Several such outlets for smoke and gas may be provided, but only one is shown. A deflector 28 is provided in the jacket or drum 26 to insure a circulation of the smoke and gases around the furnace and said jacket or drum is provided at its lower end with an outlet 29 which may be connected in any suitable manner with a chimney,

To insure the passage of the smoke and gases among the tubes 21, a deflector 30 is located in the vertical flue 23 formed by said tubes. This deflector is supported by a bar 31 with which it is connected by means of a series of rods 32. The bar 31 passes freely through a hole in the cover plate 21 on the steam dome and is provided with a series of holes forthe reception of a suitable pin 33 for sustaining the bar at any desired adjustment. Thus it will be seen that the deflector 30 can be readily adjusted vertically within the flue 23 without stopping or interrupting the operation of the furnace.

The steam dome is provided with a manhole 34, normally closed tightly by a cover 35. A similar man-hole 36 is provided in the shell 1 so as to communicate with the space between the lower flue plate 8 and the dome of the combustion chamber. This man-hole is also closed by a cover 37. By

' the provision of the man-holes 34 and 26,

attendants can enter the furnace and make any necessary repairs therein. The attend ants will also be enabled to remove any water tube which may have become impaired and replace it by a new one. In accomplishing this operation, the attendants will break the connections of the tubes with the flue plates by the use of a suitable tool, and will then remove the tube through the pi e 13, for which purpose the cover plate will he removed. A new tube can then be inserted through the pipe 13; placed in position by the attendants, and the ends upset over the flue plates in the usual way.

The pipe 13 and cover plate 21 not only facilitate the repairing of the furnace, and the adjustment of the deflector 30, but said pipe will also act as a super-heater by reason of the hot products of combustion which Will enter the same.

Havingfully described my invention what I claim as new and desire to secure by Letters-Patent, is I 1'. In a steam boiler furnace, the combination with a combustion chamber at one end,

said tubes, and t e wall of the furnace provided below the upper flue plate with an outlet for smoke and gases, of a pipe communication with the central flue formed by the annular series of water tubes and with the opening in the top of the steam dome, and a removable cover plate normally closing said opening.

2. In a steam boiler furnace, the combination with a combustion chamber, a steam dome having an exposed head provided with an opening and an annular series of water tubes between the wall of the combustion chamber and the steam dome, of a pipe passing through the steam dome and connecting the opening in the top of the latter with the flue formed by the annular series of flues, a cover plate normally closing the-opening in the top of the steam dome, a deflector Within the 'flue formed by the water tubes, and means whereby the removable deflector is slupported by said cover plate on the steam omei Y 3. In a steam boiler furnace, the combination with a combustion chamber, a steam dome having an exposed head provided with an opening, and an annular series of water tubes between the steam dome and the wall of the combustion chamber, of a pipe connecting the opening in the steam dome with the flue formed by the annular series of water tubes, a cover plate normally closing the upper end of said pipe, a deflector within the flue formed by the water tubes, a bar passing through the cover plate on the steam dome, means connecting the lower end of said bar with the deflector and means for supporting said bar and deflector at different vertical adjustments. a

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

JAMES VINCENT KENNY. 

